SEC Form 4 · Updated Daily
RBBN
— RIBBON COMMUNICATIONS INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| JPMORGAN CHASE & CO | 10%+ Owner | 52,036,586 | 2025-04-09 | P |
| Heritage PE (OEP) III, L.P. | 10%+ Owner | 49,940,222 | 2017-10-27 | — |
| OEP II Partners Co-Invest, L.P. | 10%+ Owner | 49,940,222 | 2017-10-27 | — |
| JPMC Heritage Parent LLC | 10%+ Owner | 48,190,718 | 2018-12-05 | — |
| McClelland Bruce William | Director · Officer | 3,524,297 | 2026-05-15 | M |
| DOLAN RAYMOND P | Reporting Owner | 1,345,886 | 2017-11-15 | A |
| GRAYSON BRUNS H | Director | 859,446 | 2026-10-15 | A |
| Bucci Sam | Officer | 643,880 | 2026-05-15 | M |
| Marmurek Eric S | Officer | 581,206 | 2026-10-15 | M |
| Macken Patrick W | Officer | 506,143 | 2026-05-15 | M |
| LOPEZ MIGUEL A | Director | 467,306 | 2024-10-18 | M |
| SHANI SHAUL | Director | 438,553 | 2026-10-15 | M |
| INFANTE BEATRIZ V | Director | 385,724 | 2026-06-16 | M |
| Walsh David A | Officer | 358,671 | 2018-11-15 | F |
| HOBBS FRANKLIN W IV | Director | 317,930 | 2019-05-14 | P |
| Bruny Steven M | Officer | 308,210 | 2022-09-16 | M |
| Scarfo Anthony | Officer | 259,417 | 2022-09-16 | M |
| EWING R STEWART JR | Director | 239,891 | 2026-06-16 | M |
| Tamone Tanya | Director | 223,300 | 2026-06-16 | M |
| Raiford Daryl E | Officer | 214,172 | 2020-06-17 | M |
| Riley Kevin W. | Officer | 212,704 | 2020-06-17 | M |
| Mair Scott | Director | 208,138 | 2026-06-16 | M |
| Swade Michael R. | Officer | 202,050 | 2018-10-01 | F |
| Lynch Richard J. | Director | 198,383 | 2020-06-17 | M |
| SCHUBERT SCOTT E | Director | 172,011 | 2020-06-17 | M |
| Redington Dan | Officer | 169,610 | 2025-09-04 | S |
| MATHY KENT | Director | 159,051 | 2020-06-17 | M |
| Townsend John Raymond | Officer | 103,398 | 2026-04-15 | M |
| McCready John R | Officer | 95,016 | 2019-12-16 | M |
| Joggerst Patrick | Director | 92,906 | 2019-12-16 | M |
| Ferguson Justin K. | Officer | 91,630 | 2020-06-17 | M |
| McCaffery Stephen J. | Officer | 87,200 | 2025-10-20 | — |
| Fennebresque Kim S | Director | 84,076 | 2020-02-21 | M |
| de Beer Mariano | Director | 67,906 | 2023-06-15 | M |
| PRABHU KRISH A | Director | 58,477 | 2022-05-25 | M |
| Swarth Investments Ltd. | 10%+ Owner | 5,000 | 2023-03-30 | P |
| Thaler Matthew J. | Officer | 4,241 | 2017-10-31 | — |
| ECI Holding (Hungary) Kft. | 10%+ Owner | 0 | 2020-07-28 | J |
| OEP III Co-Investors, L.P. | 10%+ Owner | 0 | 2018-12-05 | J |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-15 | SHANI SHAUL | Option exercise (derivative) | 185,210 | $0.00 | 0 |
| 2026-10-15 | SHANI SHAUL | Option exercise | 185,210 | — | 438,553 |
| 2026-10-15 | SHANI SHAUL | Grant / award | 15,625 | — | 253,343 |
| 2026-10-15 | GRAYSON BRUNS H | Grant / award | 19,176 | — | 859,446 |
| 2026-10-15 | Marmurek Eric S | Option exercise (derivative) | 37,500 | $0.00 | 0 |
| 2026-10-15 | Marmurek Eric S | Tax withholding | 14,756 | $1.46 | 566,450 |
| 2026-10-15 | Marmurek Eric S | Option exercise | 37,500 | — | 581,206 |
| 2026-07-15 | SHANI SHAUL | Grant / award | 11,752 | — | 237,718 |
| 2026-07-15 | GRAYSON BRUNS H | Grant / award | 14,423 | — | 840,270 |
| 2026-06-16 | EWING R STEWART JR | Option exercise (derivative) | 42,500 | $0.00 | 0 |
| 2026-06-16 | EWING R STEWART JR | Option exercise | 42,500 | — | 239,891 |
| 2026-06-16 | GRAYSON BRUNS H | Option exercise (derivative) | 42,500 | $0.00 | 0 |
| 2026-06-16 | GRAYSON BRUNS H | Option exercise | 42,500 | — | 825,847 |
| 2026-06-16 | INFANTE BEATRIZ V | Option exercise (derivative) | 42,500 | $0.00 | 0 |
| 2026-06-16 | INFANTE BEATRIZ V | Option exercise | 42,500 | — | 385,724 |
| 2026-06-16 | SHANI SHAUL | Option exercise (derivative) | 42,500 | $0.00 | 0 |
| 2026-06-16 | SHANI SHAUL | Option exercise | 42,500 | — | 225,966 |
| 2026-06-16 | Mair Scott | Option exercise (derivative) | 67,500 | $0.00 | 0 |
| 2026-06-16 | Mair Scott | Option exercise | 67,500 | — | 208,138 |
| 2026-06-16 | Tamone Tanya | Option exercise (derivative) | 42,500 | $0.00 | 0 |
| 2026-06-16 | Tamone Tanya | Option exercise | 42,500 | — | 223,300 |
| 2026-06-15 | EWING R STEWART JR | Grant / award (derivative) | 63,197 | $0.00 | 63,197 |
| 2026-06-15 | GRAYSON BRUNS H | Grant / award (derivative) | 63,197 | $0.00 | 63,197 |
| 2026-06-15 | INFANTE BEATRIZ V | Grant / award (derivative) | 63,197 | $0.00 | 63,197 |
| 2026-06-15 | SHANI SHAUL | Grant / award (derivative) | 63,197 | $0.00 | 63,197 |
| 2026-06-15 | Mair Scott | Grant / award (derivative) | 63,197 | $0.00 | 63,197 |
| 2026-06-15 | SILVER LOUIS | Grant / award (derivative) | 63,197 | $0.00 | 63,197 |
| 2026-06-15 | Tamone Tanya | Grant / award (derivative) | 63,197 | $0.00 | 63,197 |
| 2026-06-15 | Macken Patrick W | Grant / award (derivative) | 65,000 | $0.00 | 65,000 |
| 2026-06-15 | Macken Patrick W | Grant / award (derivative) | 97,500 | $0.00 | 97,500 |
| 2026-06-15 | Macken Patrick W | Grant / award (derivative) | 162,500 | $0.00 | 162,500 |
| 2026-06-15 | Marmurek Eric S | Grant / award (derivative) | 60,000 | $0.00 | 60,000 |
| 2026-06-15 | Marmurek Eric S | Grant / award (derivative) | 90,000 | $0.00 | 90,000 |
| 2026-06-15 | Marmurek Eric S | Grant / award (derivative) | 150,000 | $0.00 | 150,000 |
| 2026-06-15 | McCaffery Stephen J. | Grant / award (derivative) | 80,000 | $0.00 | 80,000 |
| 2026-06-15 | McCaffery Stephen J. | Grant / award (derivative) | 120,000 | $0.00 | 120,000 |
| 2026-06-15 | McCaffery Stephen J. | Grant / award (derivative) | 200,000 | $0.00 | 200,000 |
| 2026-06-15 | Bucci Sam | Grant / award (derivative) | 100,000 | $0.00 | 100,000 |
| 2026-06-15 | Bucci Sam | Grant / award (derivative) | 150,000 | $0.00 | 150,000 |
| 2026-06-15 | Bucci Sam | Grant / award (derivative) | 250,000 | $0.00 | 250,000 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.